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help pls
7^45:(7^2*7^41)*15^25:3^25-(5^5)^5


Răspuns :

7⁴⁵ : (7² * 7⁴¹) * 15²⁵ : 3²⁵ - (5⁵)⁵ = 
7⁴⁵ : 7 ⁴³ * 3²⁵ * 5²⁵ : 3²⁵ - 5²⁵ = 
7² * 5²⁵ * 1 - 5²⁵ = 
5²⁵(7² - 1) = 
5²⁵ * (49 - 1) = 
5²⁵ * 48
7⁴⁵/(7²*7⁴¹)*15²⁵/3²⁵-(5⁵)⁵=
7⁴⁵/7⁴³*15²⁵/3²⁵-5²⁵=
7²*5²⁵-5²⁵=      dam factor comun
5²⁵*(7²-1)=
5²⁵*(49-1)=
48*5²⁵,
forma alternativa = 1,43*10¹⁹